The difference between Rocky and Stony

When used as adjectives, rocky means unstable, whereas stony means as hard as stone.

check bellow for the other definitions of Rocky and Stony

Rocky as an adjective:

Unstable; easily rocked.

Examples:

"The table was rocky, so we put a book under one leg."
Rocky as an adjective:

In the style of rock and roll music.

Examples:

"His new album is quite rocky."
Rocky as an adjective (figuratively):

Troubled; or difficult; in danger or distress.

Examples:

"Their relationship had weathered some rocky times, but they loved each other."

Rocky as an adjective:

Full of, or abounding in, rocks; consisting of rocks.

Examples:

"a rocky mountain"

"a rocky shore"
Rocky as an adjective:

Like a rock.

Examples:

"the rocky orb of a shield"
Rocky as an adjective (figuratively):

Not easily impressed or affected; hard; unfeeling; obdurate

Stony as an adjective:

As hard as stone.
Stony as an adjective:

Containing or made up of stones.

Examples:

"a stony path"
Stony as an adjective (figuratively):

Of a person, lacking warmth and emotion.
Stony as an adjective (figuratively):

Of an action such as a look, showing no warmth of emotion.

Examples:

"She gave him a stony reception."
Stony as an adjective (UK, _, &, _, Australian, slang):

without any money.